Display screen or portion thereof with graphical user interface for a medical device



The FIGURE is a front view of a display screen or portion thereof with graphical user interface for a medical device.

The set of broken lines at the periphery of the figure illustrates the display screen and the remaining broken lines illustrate portions of the graphical user interface. None of the broken lines form part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with graphical user interface for a medical device, as shown and described. 